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UBI: fix use-after-free on error path
authorArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Thu, 5 Jan 2012 08:47:18 +0000 (10:47 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 26 Jan 2012 01:24:37 +0000 (17:24 -0800)
commitc16686fc0c9c8f6fa46741e50c6ab621ab507cf9
tree9abdf8514c3704340562437e2f8a502ceade8f2btree | snapshot
parent75947f78d026b6eb2c4f16c54042325f97e3288acommit | diff
UBI: fix use-after-free on error path

commit e57e0d8e818512047fe379157c3f77f1b9fabffb upstream.

When we fail to erase a PEB, we free the corresponding erase entry object,
but then re-schedule this object if the error code was something like -EAGAIN.
Obviously, it is a bug to use the object after we have freed it.

Reported-by: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/mtd/ubi/wl.c diff | blob | history
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